Langues de bois literally translates to "wooden tongues". It's a fantastic French idiom for insincere, clichéd, or evasive talk, often used by politicians or public figures.
In her rebellious anthem "Je Veux," ZAZ sings, "J'en ai marre des langues de bois!" (I'm sick of the doublespeak!). She's rejecting the empty, superficial language of high society and embracing a life of raw honesty and authenticity.
Have you ever wanted to tell the world to keep its fancy cars and expensive jewelry? That's exactly what French singer ZAZ does in this song. She runs through a whole list of luxury items people might dream of, from a "suite au Ritz" (a suite at the Ritz hotel) to the "Tour Eiffel" (the Eiffel Tower) itself, and says, "Je n'en veux pas!" (I don't want it!). She's not interested in money or status symbols. For her, happiness isn't something you can buy.
So what does she want? Simple things: "d'l'amour, d'la joie, de la bonne humeur" (love, joy, a good mood). She rejects polite society and its rules, proudly declaring, "Moi je mange avec les mains / Et j'suis comme ça!" (I eat with my hands / And that's how I am!). This song is a cheerful anthem about finding freedom by being true to yourself and choosing genuine happiness over material wealth. She invites you to forget your assumptions and join her in her world, saying "Bienvenue dans ma réalité!" (Welcome to my reality!).